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Japan : 11/12 15:15   EN
Europe, UK: Thursday, Nov 19 ~
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Order within 8 Hours 44 mins with Scheduled Delivery. If you place an order within this time, We will ship on Monday, Nov 16 2026 This delivery time is calculated by DHL and FedEx. You can check the exact delivery date on checkout page.

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     Description (2,272 characters)
■Features
・This is a high-heat-range spark plug compatible with M12 long-reach size + electrode protrusion type spark plugs, which are often used in sports cars equipped with direct-injection turbo engines.
・In addition to the features of the proven "SUPER FIRE RACING M series", reliability has been further improved by using a ruthenium alloy for the center electrode. It has been added to "SUPER FIRE RACING" as the "MR series". ■Specifications Thread size: φ12 L=26.5mm Ignition part protrusion type Wrench size: 16mm Heat range: Equivalent to NGK No. 9 ■Search words Thread size: φ12 L=26.5mm Ignition part protrusion type Wrench size: 16mm High heat range Ruthenium alloy Center electrode adopted ◇Spark plug Features◇M12 long-reach electrode protrusion type What is a high-heat-range tuning plug?
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・This is a set of 4 HKS Super Fire Plug MR series, 50003-MR45XLZ.
・This is a high-heat-range spark plug compatible with M12 long-reach size + protruding electrode type spark plugs, which are commonly used in sports cars equipped with direct-injection turbo engines.
・To provide a higher level of peace of mind when doing light tuning such as boost-up, we have prepared heat ranges of 8 (XLZ only) and 9, equivalent to NGK.
・In addition to the features of the proven "SUPER FIRE RACING M series", reliability has been further improved by making the center electrode out of ruthenium alloy. It has been added to "SUPER FIRE RACING" as the "MR series".
*If installed in a vehicle where the factory-installed spark plug is not of the protruding type, there is a risk of engine damage.
*When replacing, please carefully compare the shape with the original plug and select the appropriate spark plug shape. HKS SUPER FIRE RACING MR Series LINE UP!! Screw Size Wrench Size Heat Range Part Number 3-piece Set 4-piece Set φ12 L=26.5mm Ignition Part Protruding Type 14mm Equivalent to NGK No. 9 50003-MR45HLZ 50003-MR45HLZ-3 50003-MR45HLZ-4 16mm Equivalent to NGK No. 8 50003-MR40XLZ 50003-MR40XLZ-3 50003-MR40XLZ-4 16mm Equivalent to NGK No. 9 50003-MR45XLZ 50003-MR45XLZ-3 50003-MR45XLZ-4
Product Category: Claire Online Shop Parts Electronic Parts Spark Plugs 1 Set Car, Motorcycle, Bicycle Automotive Ignition System Parts Spark Plugs
Product Code: hks-50003-mr45xlz-4

Tags:

Car   Wheel   Shock absorber   Axle   Tire   Chassis   Car suspension   Air suspension   Motorcycle suspension   Independent suspension  


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